Furnace-front.



w. WHITE & w, c. WALLACE. FURNACE FRONT.-

APPLICATION FILED MAR. 23, 1912.

1 0 2 57 I Pa tented 'Dec. 30, 1913.

UNITED STATES PENT carton."

WlLQIAM ALBERT WHITE AND WILLIAM CARLILE WALLACE, OF NEW YORK, N. Y.;

i SAID WALLACE ASSIGNOR 1'0 SAID WHITE.

FURNACE-FRONT.

To all whom it may concern Be it known that 'we, \VILLIAM A. Wmrn, acitizen of the United States, and WILLIAM CARLILE lVALLAoE, a subject ofKing George V, both residents of the borough of Manhattan, in the city,county, and State of New York, have invented certain new and usefulImprovements in Furnace- Fronts, of which the following is aspecification.

This invention relates to oil burning furna'ces and our improvementstherein may be briefly summarized as follows: First: by the provision ina hollow furnace front, of centering irregular heat passages in which tobreak up and preheat the air supplied for combustion. Second: inconjunction with the heated air supply aforesaid, and a centrallyarranged oil burner, the provision of a concentric air inlet passage,said passage having a constrictedor Venturidike neck. Third: inConjunction with the aforesaid heated air supply, oil burner andconcentric air inlet, the provision of an approximately cone facedvalve, slidable longitudinally upon the burner tube and adapted toreignlate t-he quantity of heated air supplied to the burner.

In the drawing accompanying this application: Figure 1 is a verticalsection of a furnace front lraving our improvements; Fig. 2 is a frontview thereof, partly broken away to expose the radial corri-igations onthe inner plate; Fig. 3 is a. detail showing a partial view of thefurnace front with air box and-pressure pipe, and Fig. 4 is amodification showinga partial detail view of the corrugated inner plateshowing a protecting plate therefor with air exits...

In said figures'the letter (1 indicates the. shell-of an'oil burningfurnace, of which the frontportion is constructed according to myinvention. Said front portion is com posed in part of the inner circularfurnace or. heat plate 7), having radial corrugations to enhancerigidity while providing a maximum of heating surface, an outer,circular plate, as 0, being separated from plate I) by an interveningspace, which is divided into a nl1!n11er of centering passages (Z byascries ot' undulating, radial partitions (l, and short, intermediatepartitions d Air inlets, as c, are provided near the peri 'ihery ofplate 0, and the air received thcreat, in passing to the center isbroken in its pas- Specification of Letters Patent.

Application filed March 23, 1912.

Patent d Dec. so, 1913. Serial No. 685,7".

sage by impingement against the undula tions or angular surfaces ofpartitions d. An oil burner, as f, is supported centrally and axiallythrough plate a, as by a spider or housing 9, which may be boltecl tosaid plate 'q; the burner no'zzle projecting toward the furnaceinterior, through a central opening formed in plate I). Projectinginwardly from plate 6, in concentric relation with the oil burner f isan air outlet or sup ply tube b, said outlet extending inwardly beyondthe burner nozzle, and having a constricted or Venturi-like neck portionh, to increase the velocity of air inflow at the point oil-initialcombustion.

A'n approximately cone-faced valve, as 2', is mbunted concentricallyabout and adapted to slide longitudinally along the burner tube, toincrease or decrease the size of the air passage allowed through outlet11, and thereby regulate the quantity of preheated air for combustionsupplied to the burner. The valve i may be hollow, and haveropenings z"in its con-e face to permit air to circulate about the burner tube. Saidvalve may also have an observation opening or tube 6 therethrough. Abolt or stud, as 7', extending from the rear of valve 2', passesoutwardly througha hole 1')I'O"ltlt(l therefor in spider g, and maythereby be manipulated to operate the valve.

Obviously, the supply tube it maybe held in position in any suitablemanner. As here shown it has an annular flange h by which it is boltedto airing 72,", held against the outer surface of plate I), lying withina recess therein, whereby it may be easily removed. The spider g has aflange 9 through which it is held in engagement with the plate 0 bypivotal catches as p Connections as the legs It connect spider g withring it. In this manner the spider g, carrying the burner, valve andsupply tube may be easily adjusted and'secured in place, or removed.

When it is desired to furnish assisted draft to the furnace, a circularair box, as Z1, may be provided. exterior-1y of plate 0, lilClOSlllfIthe inlets 2, (see Fig. 3) a supply pipe, as l, communicating therewithfrom a compressed air supply, In the modification shown in Fig. 4 we mayemploy an interior relatively thick plate, as or, lying against thecorrugated plate h to protect said plate from the intense heat ofthefurnace and -of plate I).

thus prolong its life. In this manner air spaces n will be formedbetween plate m and the channels formed by the corrugations .llelutivelylarge sized apertures 0 may be provided in corrugations-i of plate 7/,conuimnicating with spaces n, and relatively sn'mll apertures p in platein perniit streams of heated air from spaces to enter the furnace overan extended area to assist combustion.

in the operation of our invention, the valve being adjusted to supplythe rcqui site quota ot' air to the burner, the air pass ing throughpassages (Z, broken in its traverse by impingement against the angularsurfaces presented by the undulating purtitions (Z, and is raised intemperature by passing mcr l'ilt. heated partitions. The valve regulatedquota of heated air is ale-- livered through the constricted supply tubeat the initial f(il]'il, llSllOIl zone, the arrange ment providedassisting in the promotion of high elliciency in combustion.

We claim:

1. A furnace front having a series of irregularly curved, centering,unheating and supply passages in the same vertical plane therein, an nitburner axially penetrating said front, and means supplying heated airfrom said passages to the combustion zone of said burner.

A furnace front composed of a corrnouted inner plate, an outer plateseparated therefrom, a series of inwardly (directed, heat coiulucting,irregulurly curved partitions forming passages between said plates,air-inlets at the periphery of said outer plate, and a centrul outletin. said inue? plate; to gcther with an oil btuxucr penetrating saidfront and an air supply tube extending inwardly from said outlet incmu-ciulric relation to the burner nozzle.

A furnace front having an air heating and supply passage therein. on oilburner extending through said front. and a, con

and supply pas age therein, an int! hcrc- 1 momma for, and a constrictedsupply tube, out- 'wurdly flared at both ends; together with an oilburner directed toward and terminating Within said supply tube, and aCOIlOltlill faced valve to regulate the flovv of air through said supplytube.

5. A furnace front having an air heating and supply passage therein, aninlet therefor, and a constricted supply tube, ontwardly flared at bothends; together with m oil burner axially penetrating said front andterminating within said supply tube, a support for said burner, aconoidal faced valve concentric with and slidable over said burner, andhaving its apex presented to said supply tube, whereby theair'in'ipinges on the fuel jet within said supply tube, and means for.moving said valve to and from said supply tube to regulate the airadmissum,

(3. A furnace front composedof u corrugated plate, means conducting airto the outer surface of said plate, a protecting plate lying against the1nner surface of said corrugated plate, forming covered air channelswith the corrugations, said corrugated plate having relatively large airopenings COIUIIHP nicating with said air channels, and said protectingplate having relatively small air openings communicating vvith thefuri'uice interior.

7. A furnace front having a burner tube axially penetrating the same, anair supply tube in concentric arrangement with said burner tube, aconoidal faced valve slidable upon said burner tube to regulate the airadn'iission through said supply tube, :1 spider supporting said burnertube and valve, and :1 ring supporting said air supply tube; to geilierwith means uniting said burner tube, spider and ring, and meansrcinovably securing the same in the furnace front, whereby the burnertube, air supply tube and valve may be removed as a whole from saidfurnace front.

Signed at the borough of Manhattan in the city, county and State of NewYork this 22nd day of March A. D. 1912.

\VILIJAM ALBERT WHITE. i

Y. )ARLTLE "ALLACE. Witnesses:

Same R, Shannan, Ginrrnuen .lll. (lormc.

